J23 may refer to:
Roads
editVehicles
edit- FVM J 23, a Swedish fighter aircraft
- GNR Class J23, a British steam locomotive
- HMS Abingdon (J23), a Hunt-class minesweeper of the Royal Navy
- HSwMS Hälsingland (J23), an Östergötland-class destroyer of the Swedish Navy
Other uses
edit- Agent J-23, a character in the Polish television series Stawka większa niż życie
- Gyroelongated square cupola, a Johnson solid (J23)
- J23, an album by Danny K
- The 2023 Spanish general election, nicknamed "23J" by the Spanish media